"Greeks are known for their unique culture but also their work as a team. We Fedora folks are also community oriented and freedom combined. The first slogin emphasizes the community aspect a bit more. The second slogan is because of the enormous amount of new features in Fedora

Plato's Akademia was a place for informal meetings of free thinkers witch became, by the power of knowledge, a well known and respected institution. Now, an academy holds the pinnacle of achievement in the respective field(s). If the slogan need a verb could be "Grow with Freedom Akademia", "Succeed in Freedom Akademia", "Get endowed by ...", "Empower yourself in ..." - many of the attendants of Plato's Akademia went on to became politicians and leaders using skills and tools acquired there (rethorics, logic, etc)

Freedom continues over time (comparing ancient times to now), and freedom is one of the key words, and I can imagine that the artwork symbolizes both freedom (open spaces, etc.) and continues (the mountains, sky, etc. don't just end after the artwork; they themselves continue). BONUS possibility for some visual play (depending on the font / image used):

Because I like the Thucydides quote (Ancient Greek historians and author, 460-404bc) “The secret of happiness is freedom. The secret of freedom is courage.” My Father who uses Fedora since F4 came up with the Shorter slogan.

Old themes

If the Greek temple stays in the background, note that it provides some thematic element: